The net power output of the turbine in an ideal reheat-regenertive cycle is 100 MW. Steam enters the high-pressure (H.P.) turbine at 90 bar, 550°C. After .expansion to 7 bar, some of the steam goes to an open heater and the balance is reheated to 400°C, after which it expands to 0.07 bar. (a) What is the steam flow rate to the H.P. turbine? (b) What is the total pump work? (c) Calculate the cycle efficiency. (d) If there is a 10c°rise in the temperature of the cooling 'water, what is the rate of flow of the cooling water in the condenser? (e) If the velocity of the steam flowing from the turbine to the condenser is limited to a maximum of 130 m/s, find the diameter of the connecting pipe. Q.12.8The net power output of the turbine in an ideal reheat-regenertive cycleis 100 MW. Steam enters the high-pressure (H.P.) turbine at 90 bar,550°C. After .expansion to 7 bar, some of the steam goes to an openheater and the balance is reheated to 400°C, after which it expands to0.07 bar. (a) What is the steam flow rate to the H.P. turbine? (b) What isthe total pump work? (c) Calculate the cycle efficiency. (d) If there is a10°c rise in the temperature of the cooling 'water, what is the rate offlow of the cooling water in the condenser? (e) If the velocity of thesteam flowing from the turbine to the condenser is limited to amaximum of 130 m/s, find the diameter of the connecting pipe.

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The net power output of the turbine in an ideal reheat-regenertive cycle is 100 MW. Steam enters the high-pressure (H.P.) turbine at 90 bar, 550°C. After .expansion to 7 bar, some of the steam goes to an open heater and the balance is reheated to 400°C, after which it expands to 0.07 bar. (a) What is the steam flow rate to the H.P. turbine? (b) What is the total pump work? (c) Calculate the cycle efficiency. (d) If there is a 10c°rise in the temperature of the cooling 'water, what is the rate of flow of the cooling water in the condenser? (e) If the velocity of the steam flowing from the turbine to the condenser is limited to a maximum of 130 m/s, find the diameter of the connecting pipe.

Q.12.8
The net power output of the turbine in an ideal reheat-regenertive cycle
is 100 MW. Steam enters the high-pressure (H.P.) turbine at 90 bar,
550°C. After .expansion to 7 bar, some of the steam goes to an open
heater and the balance is reheated to 400°C, after which it expands to
0.07 bar. (a) What is the steam flow rate to the H.P. turbine? (b) What is
the total pump work? (c) Calculate the cycle efficiency. (d) If there is a
10°c rise in the temperature of the cooling 'water, what is the rate of
flow of the cooling water in the condenser? (e) If the velocity of the
steam flowing from the turbine to the condenser is limited to a
maximum of 130 m/s, find the diameter of the connecting pipe.

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